Improvement in eokse-seoe-calk sharpeners



@uiten gratte. atrnt @fitug WILLIAM DUNGAf-N, OF VINTON, IOWA.

Letters Patent No. 82,813, dated vOctober 6, 1868.

IMPROVEMENT IN HORSEASHOB-GALK SHARPENERS.

'ro ALL WHoM rr MAY coNcERN;

Be it known that I, WILLIAM DUNCAN, cfVinton, in the county of Benton, and State of Iowa, have inventedv certain new and useful Improvements in Horse-Shoe-Calk Sharpeners; and I do hereby declare that the following is a full, clear, and exactldescription thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon, which form a part of this specification, in which- Figure 1 represents a front view.

Figure 2, a side elevation.

Figure 3, a detached view of the crank, showing its projection; and

Figure 4 a side view of the cutting-wheel detached. f

The nature of this invention consists in the employment of a corrugated cutting-wheel, in combination with a spring and shank, arranged substantially as and for the purpose hereinafter set forth.

'.Io enable others skilled in the art to make and employ my invention, I will nowdescribe its construction and operation. f v

A designates a metal bar or rod, furnished at one end with a handle, cl. The` opposite end of said bar is curved and sharpened, and also expanded or made wide,as represented iu iigrr 2. On one side of this bar is fastened or soldered the spring In, as seen in g. 2. The upper end of saidspring is provided with ears, e e. Said ears are furnishedy with holes, which are cut or formed with slots, the object of which will be seen hereafter.-

B designates the cutting-wheel, which is corrugated'on its outer surface orperiphery. Said corrugations are made sharp, and formed, as seen in gs. 2 and 4, for the purpose'of cutting or sharpening the calks of horseshoes. This wheel is provided with a hole passing through its centre, and at eachend of said hole is cut a bevelled groove or slot, the object of which'will be more apparent hereafter.

C represents the crank, which is furnished with a projection, bevellcd to correspond with the grooves in wheel B. The object of so constructing the crank is to securethe wheel firmly in place on said crank while'in motion, and also allow of its being made adjustable. It will be remarked that the wheel B is made of steel.

The operation of my machine is as follows: Y i v The calk to be sharpened is inserted betweenl the sharp end of bar A and cutting-wheel B, and motion y ,given to the crank C, and by the revolving or motion of the wheel, the calk will be pressed against the` sharp edge of the bar A, and the calk will thus be sharpened.

I do not claim anything embraced nsthe patent of 'IIays,'Duncan, and Bowen; but What I claim as new, and desire to secure by Letters Patent, is- The shank or bar A, spring I), and cutting-wheel B, all combined androperating substantially in the manner and for the purpose specified. y I' In testimony that I claim the foregoing as my own, I alix my. signature in presence of two witnesses.

WILLIAM DUN GAN. Witnesses:

B. F. SMITH, A. EDMo'NDs. 

